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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > Rear sag
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      12-16-2016, 07:14 AM   #1
sicmadek
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Rear sag

Is it normal for the stock suspension to sag in the rear after some time?
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      12-16-2016, 07:16 AM   #2
mbanks21
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I wouldnt say normal but yeah after a lot of miles the shocks and springs can get worn out. Normally it's around 75-80k IME
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      12-16-2016, 07:39 AM   #3
sicmadek
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46k miles and i find the rear sits lower
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      12-16-2016, 07:47 AM   #4
mbanks21
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Quote:
Originally Posted by sicmadek View Post
46k miles and i find the rear sits lower
You let a lot of fat chicks ride in the back?
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      12-16-2016, 07:48 AM   #5
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Quote:
Originally Posted by mbanks21 View Post
You let a lot of fat chicks ride in the back?
I just bought the car last week. Maybe the last owner pimped out some fat chicks.
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      12-16-2016, 07:52 AM   #6
mbanks21
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Maybe post some pics? Or take it to the shop and check for leaking shocks or damaged springs. Check the shock mounts too as those can wear out
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      12-16-2016, 09:59 AM   #7
sicmadek
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Is there than anything different about suspension on a sport line?
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      12-16-2016, 10:03 AM   #8
mbanks21
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Just that the springs are slightly shorter.
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      12-16-2016, 10:08 AM   #9
sicmadek
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Probably only 5-10 mm
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      12-17-2016, 09:49 AM   #10
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Typically it would be the suspension bushings wearing out, and the camber starts to slide (then the back squats). But it shouldn't be a lot.

I don't think you could keep enough load in the trunk of this car to cause permanent damage to the springs though (unless you haul sod all day)
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